Status Registers

Bit Mapped

S22

 

 

 

 

 

Bit

Value

Command

Description

 

 

 

 

1, 0

00

L

Speaker volume low

 

01

L1

Speaker volume low

 

10

L2

Speaker volume low

 

11

L3

Speaker volume high

 

 

 

 

3, 2

00

M

Speaker off

 

01

M1

Speaker on until carrier detect

 

10

M2

Speaker always on

 

11

M3

Speaker off when modem is dialing

 

 

 

 

6-4

000

X

CONNECT message only, blind dials, no

 

 

 

busy detect

 

001

X1

CONNECT / appropriate code for rate,

 

 

 

blind dials, no busy detect

 

010

X2

CONNECT / appropriate code for rate,

 

 

 

waits for dial tone, no busy detect

 

011

X3

CONNECT / appropriate code for rate,

 

 

 

blind dials, reports BUSY

 

100

X4

CONNECT / appropriate code for rate,

 

 

 

waits for dial tone, reports BUSY

 

 

 

 

7

0

&P

Make / break ratio (US) 39/61

 

1

&P1

Make / break ratio (UK) 33/67

 

 

 

 

Bit Mapped

S23

 

 

 

 

 

Bit

Value

Command

Description

 

 

 

 

0

0

&T5

Remote digital loop request denied

 

1

&T4

Remote digital loop request granted

 

 

 

 

5-1

---

---

Reserved

 

 

 

 

7, 6

00

&G

No guard tones

 

01

&G1

550 Hz guard tone

 

10

&G2

1800 Hz guard tone

 

11

--

Not used

 

 

 

 

S24

 

 

 

Not used

 

 

10-10

Modem 3600

Page 154
Image 154
Black Box 3600 MODEM manual Bit Mapped S22, Bit Mapped S23, S24